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The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 7
Issue 1 (2002) pp 1-6
How to Recognize Disjoint Hydrocarbons: A Hückel Theory Topic
Richard Francis Langler
Department of Natural Science and Mathematics, University of Charleston,
Charleston, West Virginia 25304
Received May 9, 2001. Accepted September 6, 2001
Published online: 21 December 2001
Abstract. Categorizing even alternant hydrocarbons as joint or disjoint serves as the basis for differentiating between antiaromatic, Y-antiaromatic and very Y-antiaromatic structures. Both previously proposed methods for categorizing even alternant hydrocarbons as joint or disjoint are unreliable. A new approach is presented and shown to be both conveniently applicable and reliable. Because this topic bridges Hückel theory and modern structural concerns, it is suitable for inclusion in undergraduate Hückel theory courses.
Key Words: In the Classroom; organic chemistry; Hückel
(*) Corresponding author. (E-mail: rlangler@mta.ca)
Article in PDF format (148KB) HTML format
Issue date: February 1, 2002
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